Credit to Xergoyf again

No recent sales via item histories:

Marketplace.tf sales https://marketplace.tf/items/tf2/1108;5;u3035

(ALL ARE UNTRACABLE)

July 22 2020: $9.7 (key=$1.94, 5 keys) 5 keys

July 27 2020: $15.39 (key=$1.92, 8.02 keys) ~8 keys

August 3 2020: $15.55 (key=$1.89, 8.23 keys) ~8 keys

8 keys is a more common trading point and 5 keys was most likely sold to a buy order, 2 buyers at 5.01 keys on Backpack.tf too

Going with 8 keys